... An unusual family in the annals of astronomy was that of Hugh Breen of Armagh (1791--1848) who with his sons Hugh (b.1824), James (1826--1866) and John William (1832--1871) provided four working astronomers to the staff of the Royal Observatory Greenwich and the Cambridge University Observatory in the 19th century. ... HUGH BREEN 2.1. ... Hugh Breen Esq., ... Cambridge 1846--1858 James Breen's appointment took place, by coincidence, at a dramatic moment in the history of the Cambridge Observatory. ...